Gandar Mahojwala
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ANALISIS KERUSAKAN LINGKUNGAN AKIBAT PERTAMBANGAN PASIR DI SUNGAI PROGO Paripurno, Eko Teguh; Awang Hendrianto Pratomo; Purbudi Wahyuni; Nandra Eko Nugroho; Wahyu Sugeng Triadi; Gigih Aditya Pratama; Sukiyani; Wana Kristanto; Gandar Mahojwala
Indonesian Journal of Environment and Disaster Vol. 4 No. 2 (2025): Indonesian Journal of Environment and Disaster
Publisher : Disaster Research Center, Universitas Sebelas Maret, Surakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ijed.v4i2.1920

Abstract

ANALYSIS OF ENVIRONMENTAL DAMAGE DUE TO SAND MINING IN THE PROGO RIVER Mining activities can significantly impact the physical environment, particularly in areas close to critical infrastructures such as rivers and residential buildings. This research purposively choose a corporation mining activities in the Progo River to being evaluated in the context of envionmental damage. This study aims to assess the extent of environmental damage in and around of corporation mining concession area, specifically focusing on river degradation, erosion, and structural instability. The goal is to classify the damage according to established environmental criteria and determine the severity of the impact. The research utilized aerial photographs, satellite imagery, and photos obtained from drones. These were first processed using photogrammetry software, followed by geometric correction on the images to eliminate perspective distortion and topographic tilt, resulting in an accurate orthophoto. The orthophoto was then analyzed spatially using a Geographic Information System (GIS).. The assessment was carried out using the criteria and benchmarks provided by the Governor's Decree of the Special Region of Yogyakarta No. 63 of 2003. The findings indicate significant environmental damage due to PT A’s mining activities. River flow changes were identified, with a shift to a meandering pattern and the formation of deep troughs in the riverbed. Based on the analysis, the environmental damage caused by PT A’s mining activities falls into the category of severe damage. The degradation of the river, erosion of land, and instability of nearby infrastructure necessitate urgent attention and mitigation efforts to prevent further environmental harm.
PERBANDINGAN NILAI KETANGGUHAN DESA PESISIR ATAS RISIKO TSUNAMI DAN FAKTOR PERUBAHAN NILAI KETANGGUHAN: STUDI ATAS DESA PARANGTRITIS DAN DESA TIRTOHARGO, KABUPATEN BANTUL Yugyasmono; Gandar Mahojwala; Eko Teguh Paripurno; Purbudi Wahyuni
Indonesian Journal of Environment and Disaster Vol. 2 No. 2 (2023): Indonesian Journal of Environment and Disaster
Publisher : Disaster Research Center, Universitas Sebelas Maret, Surakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ijed.v2i2.882

Abstract

The southern coast of Java Island is a tsunami-prone area, and this condition has encouraged resilience assessment efforts carried out since 2019 by BNPB to test the resilience of villages, specifically in the event of a tsunami disaster. Like other areas on the southern coast of Java Island, Bantul Regency is at high risk, as are Parangtritis Village and Tirtohargo Village. These two villages were purposively chosen for comparison because both villages have the same high level of risk. This research aims to compare the resilience values ​​of the two villages based on assessments in 2019 and 2020 using the Village/District Disaster Resilience Assessment tool, as well as qualitatively exploring the factors that influence the resilience values ​​and changes in the resilience values ​​of the two villages. This study uses a qualitative method. Comparison of resilience values ​​is presented with narratives and comparison tables based on existing components, and exploration is explored through in-depth interviews with parties who help build resilience in the village. The results show that comparing values decreased the resilience value in Parangtritis Village from the Main Resilient Village category to the Middle Resilient Village. At the same time, there was an increase in Tirtohargo Village from the Middle Resilient Village category to the Main Resilient Village. Toughness, which is both above average, is influenced by experiences and lessons learned from the 2006 Earthquake, the strong values ​​of cooperation and independence, community initiatives through the Village DRR Forum, the role of village government, support from regional and central governments, contributions from non-government organizations, and the availability of village budgets. This research notes that enforcing assessment procedures and understanding assessment for facilitators and participants also influence the resulting value changes.